Model reference
LG LMXS27766S
Refrigerator
1 document14 error codes14 service modes
Available documentation
Service Manual
- Refrigerator Service Manual107 pg
MyPros+ Max
Diagnose your LG LMXS27766S.
- Step-by-step diagnostics from the service manual
- Test values, resistance specs, and wiring references
- Verified part numbers when replacement is needed
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Error codes (14)
CodeMeaning
E CFAbnormality of BLDC fan motor for mechanic room (condenser fan)E COCommunication error between Micom of Main PCB and Display MicomE FFAbnormality of BLDC fan motor for freezerE FSFreezer sensor error caused by short or disconnection of the freezer sensor.E gFFlow meter (sensor) defectE IFAbnormality of BLDC fan motor for ice makingE ISIcing sensor error caused by short or disconnection of the icing sensor (ice…E ItIce maker kit defectE rFAbnormality of BLDC fan motor for refrigeratorE rSRefrigerator sensor error caused by short or disconnection of the refrigerator…E rtRoom temperature sensor error caused by short or disconnection of room temp…E SSShort or disconnection of the sensor about ice maker (icing sensor, ice maker…F dHPoor defrostingF dSDefrosting sensor error caused by short or disconnection of the defrosting…Service modes (14)
- Display Check FunctionSimultaneously press Ultra Ice button and Freezing Temperature Adjustment button for one second
- Display Mode (Demo Mode)With the refrigerator door open, press and hold the Refrigerator Temp Button and ICE PLUS Button…
- Display Mode (Showroom)With the refrigerator door open, press and hold the Refrigerator Temp Button and ICE PLUS Button…
- Error Code DisplayWithin 3 hours after an error
- Filter ResetAfter replacing the filter, press and hold the Light/Filter button for more than 3 seconds.
- Ice Maker Test ModePress and hold the Fill Key on the icemaker for about 3 seconds
- Ice-detecting Sensor Diagnosis1) Remove ice bin from compartment
- Icemaker Test ModePress and hold the Fill Key on the icemaker for about 3 seconds
- Lock FunctionPress and hold the LOCK button for 3 seconds to lock display, dispenser, and control panel.
- Temperature Display Toggle (°F/°C)Press and hold the FRZ TEMP and REF TEMP keys at the same time for over 5 seconds.
- Test Mode 1Push the test button on the Main PCB 1 time
- Test Mode 2Push the test button on the Main PCB 2 times
- Test Mode 3 (Forced Defrost)Push the test button on the Main PCB 3 times
- Toggle °F / °C DisplayPress and hold the FRZ TEMP and REF TEMP keys at the same time for over 5 seconds.
Full entry steps, exit procedures, and test sequences are available in Max.
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